RESCHEDULED! Physics Seminar-Phase Shifts, Photons, & Feedback: Irradiance Detectors in the Eye

4:30 PM  - 5:30 PM
Thursday Mar 6, 2014
Room 150, Olin-Rice Science Center

Jay Demas, St. Olaf College. The light sensitive portion of the eye, the retina, signals the brain about the pattern, intensity, and wavelength of light striking the retina. However, this information is used for more than just seeing. A special class of retinal neurons called melanopsin retinal ganglion cells (mRGCs) mediate behaviors that depend on light, but not on vision. These behaviors include synchronizing behavior with the external environment by setting the phase of our brain's circadian oscillator. Melanopsin, for which these cells are named, is a light-sensing protein that makes mRGCs intrinsically photosensitive. We are interested in understanding how mRGCs regulate the gain and dynamics of their light response through feedback from a class of interacting proteins called arrestins.

Refreshments at 4 PM, OLRI atrium

This event is for: Students, Staff and Faculty

Admission: Free

Sponsored By: Physics & Astronomy

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